ATYR

aTYR PHARMA INC

$0.53 +0.05 (+9.94%) At close · Jul 15

Market Cap

$49.96M

98,051,212

Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score

62/100

Short interest 14.8% of shares — P95 Days to cover 5.1 — P81 Price vs VWAP -6.8% — P33 Short-volume trend -7.3% — P25 Short interest change -21.6% — P15 Worst FTD 0.06% of shares — P69

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

1M 3M 6M 1Y 5Y All

Short Interest History

Settlement Date	Current Position	Previous Position	Change	Avg Daily Volume	Days to Cover
2026-06-30	14,505,076	18,511,717	-4,006,641	2,861,016	5.07
2026-06-15	18,511,717	20,188,406	-1,676,689	1,897,427	9.76
2026-05-29	20,188,406	21,394,161	-1,205,755	4,028,884	5.01
2026-05-15	21,394,161	19,845,053	+1,549,108	4,773,984	4.48
2026-04-30	19,845,053	19,884,135	-39,082	785,086	25.28
2026-04-15	19,884,135	19,617,163	+266,972	939,877	21.16
2026-03-31	19,617,163	18,967,502	+649,661	1,001,204	19.59
2026-03-13	18,967,502	18,802,360	+165,142	1,174,241	16.15
2026-02-27	18,802,360	19,877,366	-1,075,006	1,620,457	11.60
2026-02-13	19,877,366	20,432,971	-555,605	2,359,731	8.42
2026-01-30	20,432,971	21,334,051	-901,080	2,646,935	7.72
2026-01-15	21,334,051	25,013,857	-3,679,806	1,505,427	14.17
2025-12-31	25,013,857	30,385,566	-5,371,709	2,246,751	11.13
2025-12-15	30,385,566	29,801,092	+584,474	1,963,711	15.47
2025-11-28	29,801,092	29,864,642	-63,550	3,224,234	9.24
2025-11-14	29,864,642	31,060,738	-1,196,096	3,920,174	7.62
2025-10-31	31,060,738	36,142,593	-5,081,855	5,105,955	6.08
2025-10-15	36,142,593	37,932,369	-1,789,776	10,668,975	3.39
2025-09-30	37,932,369	33,089,093	+4,843,276	21,114,048	1.80
2025-09-15	33,089,093	29,405,110	+3,683,983	20,997,802	1.58
2025-08-29	29,405,110	28,245,132	+1,159,978	3,659,546	8.04
2025-08-15	28,245,132	25,598,382	+2,646,750	3,937,468	7.17
2025-07-31	25,598,382	20,381,870	+5,216,512	7,486,108	3.42

Showing 1–23 of 23 settlements

Key facts CIK 1339970 CUSIP 002120202 13F (30d) 7 filings 7 filers Visit website Investor relations